[Jackit-devel] Re: [linux-audio-dev] 2.4.20 + lowlat +preempt + alsa + jack = dead computer

Fernando Pablo Lopez-Lezcano nando at ccrma.Stanford.EDU
Fri Jan 3 18:24:01 UTC 2003


> >I browsed the Kernel Source and there is only one mark_inode_dirty in
> >pipe_write (in fs/pipe.c). So we know where it is hanging...
> >
> >And in __mark_inode_dirty (in fs/inode.c) there is one  
> >   spin_lock(&inode_lock)
> >call, and I guess that is where the whole thing is hanging. So something
> >is holding that lock... how do I find out who is doing that? Apparently
> >the handling of inode_lock is confined to inode.c. I'll keep reading. 
> >
> >Maybe the pipe in question is one of the pipes that jack uses for ipc?
> 
> seems *damn* likely ... sorry to just be chiming in with a useless comment!

Do you think the problem might be jack? Some race condition that only
happens (or is much more likely to happen) in 2.4.20? It does sound more
like a kernel bug, but I have not seen a hung machine without having
jack and clients running...

-- Fernando





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